Israeli aircraft attacked in Gaza on Wednesday, witnesses said, and sirens warning of rocket fire from the Palestinian territory sounded in southern Israel.
Sources claimed a training base run by the Hamas militant group, which controls Gaza, was hit in the air strike.
The Israeli military, which did not immediately confirm the attack, said rocket-warning sirens went off in Israeli communities bordering Gaza.
Hours earlier, a rocket fired by Palestinian militants in Gaza struck the coastal Israeli city of Ashdod, wounding two people, at the same time as Israel and two Gulf Arab states signed agreements in Washington to establish formal relations.
Last month, Israeli air strikes hit Hamas targets several times in the Gaza Strip, as hostilities between the Jewish State and the Palestinian enclave raged on.
At that time, Israel said the strikes and other measures – including halting the territory’s fuel supply – were in retaliation for firebombs suspended from balloons that float over the border from Gaza.
The overnight attack on August 14 on sites used by Hamas was the fifth such operation in that week.
It came just hours after Israel and the United Arab Emirates agreed to normalize ties in a landmark US-brokered deal.
That agreement has been strongly rejected by the Palestinians, who called it a “betrayal” of their cause, including their claim to Jerusalem as the capital of their future state.